Flat tie and method of constructing form using flat tie and nonmetallic form board

ABSTRACT

Disclosed herein is a flat tie including a long strip-shaped steel tie body passing through a pair of form boards, which are spaced apart in a width direction, and having wedge holes, which are respectively provided in both end portions thereof protruding outward from the associated form boards, and a plurality of gap holding protrusions provided on one surface of the tie body, which is located in a space between the pair of spaced form boards, so as to be caught by and fixed to one side of each form board, such that a predetermined distance between the pair of form boards is maintained. In accordance with the disclosure, it is possible to basically remove a separate gap holding member for maintaining a distance between form boards and to reduce costs.

TECHNICAL FIELD

The present invention relates to a flat tie that is used to construct a form using a nonmetallic form board (sheathing board), with heat insulation properties, (e.g., made of a foam material such as Styrofoam or a plastic material) used as an internal/external insulator for construction, without the removal of the form board after pouring concrete, and a method of constructing a form using the flat tie and the nonmetallic form board. More particularly, the present invention relates to a flat tie that has a plurality of gap holding protrusions provided on one surface of a tie body of the flat tie, which traverses a space between a pair of form boards spaced apart from each other at a regular interval for pouring concrete, so as to be caught by and fixed to one side of the associated form board, such that a predetermined distance between the pair of form boards is maintained, and a method of constructing a form using the flat tie and the nonmetallic form board.

BACKGROUND ART

When buildings are generally constructed, a plurality of form boards forming the frame of a wall is used to form the wall, which defines the external appearance of the buildings, transverse support bars (pipes) are embedded in concrete poured between the form boards to function as respective frame members and are simultaneously connected to hooks by wedges to be installed to end portions protruding outward from the form boards in order to endure the pressure of concrete between the form boards, or building materials, such as a flat tie for mounting a reinforcement plate capable of covering and reinforcing the contact connection portion between the form boards, are used.

By way of example, the process of forming a conventional building wall will be schematically described. After a plurality of form boards are spaced apart from each other at regular intervals in the width direction and are continuously and vertically arranged in the longitudinal direction, concrete is poured into the space between the form boards and is then cured, thereby enabling a predetermined vertical wall to be completed.

In addition, the process of forming a lamination plate (slab) on the upper end portion of the vertical wall is performed by horizontally arranging lumber on the upper end portion of the vertical wall, again arranging plywood on the lumber, fixing the same with nails, pouring concrete in the state in which insulation (dustproof) Styrofoam is placed on the plywood, and then separating and removing the lumber and the plywood.

Meanwhile, in order for the spaces, which are defined between the form boards, for pouring concrete to be maintained at predetermined intervals in the related art, separate gap holding members are provided in the central portions of the form boards.

However, since the conventional method of maintaining the distance between the form boards is a method in which the distance between form boards is maintained by installing separate gap holding members in the central portions of the form boards, costs may be incurred for the provision of the separate gap holding members. In addition, it is difficult for an operator to access the gap holding members arranged in the central portions of the form boards, and the operation is cumbersome since the gap holding members are beyond the operator's reach.

DISCLOSURE Technical Problem

Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a flat tie that has a plurality of gap holding protrusions provided on one surface of a tie body of the flat tie, which traverses a space between a pair of form boards spaced apart from each other at a regular interval for pouring concrete, so as to be caught by and fixed to one side of the associated form board such that a predetermined distance between the pair of form boards is maintained, thereby enabling costs to be reduced while a separate gap holding member for maintaining a distance between form boards is basically removed, and a method of constructing a form using the flat tie and a nonmetallic form board.

In addition, it is another object of the present invention to provide a flat tie capable of allowing a distance between edge portions of form boards to be maintained, thereby overcoming an existing difficulty of operation due to maintaining a distance between central portions of form boards and thus achieving an overall improvement in operation such as an improvement in operation efficiency and a reduction in operating time, and a method of constructing a form using the flat tie and a nonmetallic form board.

Technical Solution

In accordance with an aspect of the present invention, the above and other objects can be accomplished by the provision of a flat tie adapted such that, in a state in which the flat tie traverses a space between a plurality of form boards, spaced apart from each other at regular intervals in a width direction and continuously and vertically arranged in a longitudinal direction, while both end portions of the flat tie protrude outward from the respective form boards, the flat tie is embedded after concrete is poured into a space between a pair of form boards and is then cured, the flat tie including a tie body passing through the pair of form boards spaced apart in the width direction, and having wedge holes respectively provided in both end portions thereof protruding outward from the associated form boards, and a plurality of gap holding protrusions provided on one surface of the tie body located in the space between the pair of spaced form boards, so as to be caught by and fixed to one side of each form board, such that a predetermined distance between the pair of form boards is maintained.

In accordance with another aspect of the present invention, there is provided a method of constructing a form using a flat tie, including preparing a flat tie having gap holding protrusions of a front/rear surrounding structure, vertically arranging a plurality of form boards such that the form boards are spaced apart from each other at regular intervals in a width direction and continue in a longitudinal direction, connecting facing edges of the respective form boards, continuously arranged in the longitudinal direction, using an H-bar, and arranging the flat tie such that the flat tie is traversed in the width direction between facing edge cross-sections of the adjacent form boards while fixing the respective gap holding protrusions of the flat tie by surrounding front and rear surfaces of each side edge of the corresponding form boards by the gap holding protrusions, such that a predetermined distance between the form boards in the width direction thereof is maintained.

Advantageous Effects

In accordance with a flat tie and a method of constructing a form using the flat tie and a nonmetallic form board, the flat tie has a plurality of gap holding protrusions provided on one surface of a tie body of the flat tie, which traverses a space between a pair of form boards spaced apart from each other at a regular interval for pouring concrete, so as to be caught by and fixed to one side of the associated form board such that a predetermined distance between the pair of form boards is maintained, thereby enabling costs to be reduced while a separate gap holding member for maintaining a distance between form boards is basically removed.

In addition, since a distance between edge portions of the form boards is maintained, it is possible to overcome an existing difficulty of operation due to maintaining a distance between central portions of form boards and thus achieve an overall improvement in operation such as an improvement in operation efficiency and a reduction in operating time.

DESCRIPTION OF DRAWINGS

The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a perspective view illustrating one flat tie according to an embodiment of the present invention;

FIG. 2 is a perspective view illustrating one flat tie according to another embodiment of the present invention;

FIG. 3 is a perspective view schematically illustrating the process of constructing form boards using the flat ties according to the embodiments of the present invention;

FIG. 4 is a main perspective view illustrating the state in which a hook and a transverse support bar are installed in the process of constructing the form boards using the flat ties according to the embodiments of the present invention;

FIG. 5 is a top cross-sectional view schematically illustrating the process of constructing the form boards using the flat ties according to the embodiments of the present invention; and

FIG. 6 is a perspective view illustrating an example of a form board which may be used in the embodiments of the present invention.

BEST MODE

Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings and described below.

As illustrated in FIGS. 1 to 5, a flat tie, which is designated by reference numeral 20, according to an embodiment of the present invention is adapted such that, in the state in which the flat tie traverses a space between a plurality of form boards 10, which are spaced apart from each other at regular intervals in a width direction and are continuously and vertically arranged in a longitudinal direction while both end portions of the flat tie protrude outward from the respective form boards 10, the flat tie is embedded after concrete is poured into the space between a pair of form boards 10 and is then cured.

The flat tie 20 includes a long strip-shaped steel tie body 21 passing through the pair of form boards 10 spaced apart in the width direction, and having wedge holes 21 a, which are respectively provided in both end portions thereof protruding outward from the respective form boards 10, and a plurality of gap holding protrusions 22 provided on one surface of the tie body 21, which is located in the space between the pair of spaced form boards 10, so as to be caught by and fixed to one side of each form board 10, such that a predetermined distance between the pair of form boards 10 is maintained.

Here, the gap holding protrusions 22 have a perpendicular protruding structure configured to perpendicularly protrude from one surface of the flat tie 20.

The flat tie 20 is arranged in the width direction between and through the facing edges of the form boards 10, which are continuously arranged in the longitudinal direction, and the gap holding protrusions 22 have a front/rear surrounding structure configured to surround the front and rear surfaces of each edge of the corresponding form boards 10.

That is, the gap holding protrusion 22 is configured as four gap holding protrusions in order to surround the front and rear surfaces of the respective edge of the associated form boards 10.

As illustrated in FIG. 2, a flat tie, which is designated by reference numeral 25, according to another embodiment of the present invention is applied to each form board 10 having central through-holes 11 formed in the central portion thereof for maintaining the distance between the central portions of the form boards 10. The flat tie 25 is arranged through the central through-holes 11 in each form board 10, and gap holding protrusions 26 have an inner surface catching structure configured to be caught by the edges of the central through-holes 11 in the facing inner surfaces of the associated form boards 10.

That is, the gap holding protrusion 26 is configured as two gap holding protrusions so as to be caught by the edges of the central through-holes 11 in the facing inner surfaces of the associated form boards 10.

The perpendicular protruding structure of the gap holding protrusion 22 or 26 is a structure in which one surface of the flat tie 20 or 25 is cut and then the tip portion thereof is bent in a perpendicular direction.

Meanwhile, as illustrated in FIG. 4, a separate hook 50 is connected to a wedge 51 through wedge holes 21 a or 25 a in both ends of the flat tie 20 or 25, which is exposed outward from the associated form boards 10, and thus a transverse support bar 52 may be installed to the hook 50.

Here, a separate square lumber 53 for supporting the transverse support bar 52 may be arranged in the space between the transverse support bar 52 and the form board 10.

In addition, before the transverse support bar 52 is installed, separate reinforcement plates 54 may be mounted through the wedge holes 21 a in both ends of the flat tie 20 exposed outward from the form boards 10 so as to reinforce the connection portions between the continuous form boards 10, as illustrated in FIG. 3.

Reference numeral 30 refers to an H-bar for interconnecting the facing edge portions between the form boards 10 which are continuously arranged in the longitudinal direction, and reference numeral 40 refers to a corner bar for connecting the corner portions between the form boards 10.

One side of the H-bar 30 is provided with a tie-seating groove 31, which is recessed such that the flat tie 20 is inserted into the tie-seating groove 31 to be seated to the H-bar 30.

Since the form boards 10 are connected by the H-bar 30 in the present invention, the gap holding protrusions 22 have a structure configured to surround the front and rear surfaces of the edge of each of the form boards 10 with the H-bar 30 interposed therebetween.

In addition, reference numeral 12 refers to a recessed groove portion 12 (see FIG. 6) which is recessed such that the H-bar 30 is flush with the front and rear surfaces of the form board 10 in the edge portion of the form board 10. Reference numeral 12 a (see FIG. 6) refers to a through-hole through which passes a fixing pin for interconnecting and fixing the form board 10 and the H-bar 30. Reference numeral 12 b (see FIG. 6) refers to a tie through-hole having a “T” shape, through which the flat tie 20 passes.

Hereinafter, a method of constructing the form board using the flat ties according to embodiments of the present invention will be described with reference to the above-mentioned structure. First, a flat tie 20 having gap holding protrusions 22 of a front/rear surrounding structure is prepared.

Next, a plurality of form boards 10 are vertically arranged so as to be spaced apart from each other at regular intervals in a width direction and to continue in a longitudinal direction.

Next, the facing edges of the respective form boards 10 which continue in the longitudinal direction are connected using an H-bar 30.

Next, the flat tie 20 is traversed and arranged in the width direction between the facing edge cross-sections of the adjacent form boards 10, and the respective gap holding protrusions 22 of the flat tie 20 are fixed by surrounding the front and rear surfaces of each side edge of the corresponding form boards 10 with the H-bar 30 interposed therebetween, such that a predetermined distance between the pair of form boards 10 in the width direction thereof is maintained. Through such processes, the construction of the form using the flat tie according to the present invention is completed.

Meanwhile, when the form board 10 is a form board 10 having a central through-hole 11, the flat tie 20 is provided as a flat tie 25 having gap holding protrusions 26 of an inner surface catching structure. The flat tie 25 is arranged in the space between a pair of spaced form boards 10, and the gap holding protrusions 26 of the inner surface catching structure are caught by the inner edge portions of the central through-holes 15 in the respective form boards 10 facing each other. Thus, a predetermined distance between the central portions of the form boards 10 in the width direction thereof is maintained.

Next, reinforcement plates 54 are mounted through wedge holes 21 a in both ends of the flat tie 20 exposed outward from the form boards 10, and hooks 50 are connected again therethrough, thereby enabling reinforcement structures such as transverse support bars 52 to be additionally installed.

In this state, when concrete is poured into the space between the form boards 10 and is then cured, a predetermined vertical wall for building may be completed.

As described above, in accordance with the form board according to the embodiments of the present invention, the flat tie has the gap holding protrusions provided on one surface of the tie body of the flat tie, which traverses the space between the pair of form boards spaced apart from each other at a regular interval for pouring concrete, so as to be caught by and fixed to one side of the associated form board such that the predetermined distance between the pair of form boards is maintained, thereby enabling costs to be reduced while a separate gap holding member for maintaining a distance between form boards is basically removed. In addition, since the distance between the edge portions of the form boards is maintained, it is possible to overcome an existing difficulty of operation due to maintaining a distance between central portions of form boards and thus achieve an overall improvement in operation such as an improvement in operation efficiency and a reduction in operating time.

Various embodiments have been described in the best mode for carrying out the invention. Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. 

1. A flat tie adapted such that, in a state in which the flat tie traverses a space between a plurality of form boards, spaced apart from each other at regular intervals in a width direction and continuously and vertically arranged in a longitudinal direction, while both end portions of the flat tie protrude outward from the respective form boards, the flat tie is embedded after concrete is poured into a space between a pair of form boards and is then cured, the flat tie comprising: a tie body passing through the pair of form boards spaced apart in the width direction, and having wedge holes respectively provided in both end portions thereof protruding outward from the associated form boards; and a plurality of gap holding protrusions provided on one surface of the tie body located in the space between the pair of spaced form boards, so as to be caught by and fixed to one side of each form board, such that a predetermined distance between the pair of form boards is maintained, wherein: the gap holding protrusions have a perpendicular protruding structure configured to perpendicularly protrude from one surface of the flat tie; the flat tie is arranged in the width direction between and through facing edges of the form boards, continuously arranged in the longitudinal direction; and the gap holding protrusions have a front/rear surrounding structure configured to surround front and rear surfaces of each edge of the corresponding form boards.
 2. The flat tie according to claim 1, wherein the perpendicular protruding structure of each of the gap holding protrusions is formed by cutting one surface of the flat tie and then bending a tip portion thereof in a perpendicular direction.
 3. A method of constructing a form using a flat tie, comprising: preparing a flat tie having gap holding protrusions of a front/rear surrounding structure; vertically arranging a plurality of form boards such that the form boards are spaced apart from each other at regular intervals in a width direction and continue in a longitudinal direction; connecting facing edges of the respective form boards, continuously arranged in the longitudinal direction, using an H-bar; and arranging the flat tie such that the flat tie is traversed in the width direction between facing edge cross-sections of the adjacent form boards, and fixing the respective gap holding protrusions of the flat tie by surrounding front and rear surfaces of each side edge of the corresponding form boards by the gap holding protrusions while wedge holes in both end portions of the flat tie protrude outward from the respective form boards, such that a predetermined distance between the form boards in the width direction thereof is maintained.
 4. The method according to claim 3, wherein: each of the form boards is provided as a form board having a central through-hole; the flat tie is provided as a flat tie having a gap holding protrusion of an inner surface catching structure; and the flat tie is arranged in a space between a pair of spaced form boards, and the gap holding protrusion of the inner surface catching structure is caught by an inner edge portion of the central through-hole in each of the form boards facing each other, such that a predetermined distance between the form boards in the width direction thereof is maintained. 